Novel clamping tool for automatic welding of forklift fork frame

Abstract

The utility model relates to a forklift fork frame welding technical field, and disclose a kind of clamping tool for new type forklift fork frame automatic welding, including tool frame and the side pull assembly and side movable clamping component located in tool frame upper portion, the end of tool frame is fixedly installed with mounting seat, the one end fixedly installed with counterweight of mounting seat away from tool frame, the side of tool frame upper portion is fixedly installed with limit stop bar, the middle part of tool frame bottom end is fixedly installed with connecting disc.The clamping tool for new type forklift fork frame automatic welding, avoid partial load by counterweight balance overall barycenter, realize automatic operation with the connecting disc connected with mechanical arm, greatly improve welding operation efficiency, limit stop bar can quickly limit fork body placement datum, side pull assembly, side movable clamping component and fixed clamping component, auxiliary clamping component form three-dimensional clamping system, can adapt to the clamping demand of different specifications fork body, and strong universality.

Description

Technical Field

[0001] This utility model relates to the field of forklift fork carriage welding technology, specifically a new type of clamping fixture for automatic welding of forklift fork carriages. Background Technology

[0002] The fork carriage is the core component of a forklift for carrying goods. As a key structure connecting the mast and forks, it directly determines the forklift's load-bearing capacity and operational safety. It is usually composed of components such as crossbeams, side frames, and guide roller assemblies, and is made of high-strength steel. It needs to withstand the impact of the weight of the goods and the repeated loads during operation. Therefore, the weld strength and structural precision requirements are extremely high. The processing quality of the fork carriage is directly related to the stability of the forklift during operation. If there are problems such as incomplete welding or deformation, it can easily lead to safety accidents such as goods falling. In mass production, the welding process of the fork carriage is particularly critical.

[0003] Traditional forklift fork carriage assemblies have many specifications, with variations in length, width, and height. Additionally, the position and size of the forklift fork carriage hooks also differ. Currently, most companies use a manual clamping fixture and manual welding method for production. Due to the varied specifications of forklift fork carriages, a significant amount of time must be spent adjusting the fixture before each welding operation. Furthermore, multi-axis clamping is not possible, which can easily lead to workpiece misalignment during the welding process, resulting in poor practicality. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a novel clamping fixture for automatic welding of forklift forks, thereby solving the problems mentioned in the background.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel clamping fixture for automatic welding of forklift forks, comprising a fixture frame and a side pull assembly and a side movable clamping assembly located on the upper part of the fixture frame. A mounting base is fixedly installed at the end of the fixture frame, and a counterweight is fixedly installed at the end of the mounting base away from the fixture frame. A limit stop bar is fixedly installed on the upper side of the fixture frame, and a connecting plate is fixedly installed in the middle of the bottom end of the fixture frame. A fixed clamping assembly corresponding to the side movable clamping assembly is also fixedly installed at the top of the fixture frame. An auxiliary clamping assembly is fixedly installed on the side of the side pull assembly, and the forklift body is placed on the fixture frame.

[0006] Preferably, the side-pulling assembly and the side-moving clamping assembly are distributed at a 90° angle, and several identical limit stops are provided. The several limit stops are distributed at equal intervals at the top of the tooling frame, and the connecting plate is connected to the robotic arm.

[0007] Through the above technical solution, the limiting stop bar initially defines the placement benchmark of the fork body, the cooperation between the connecting plate and the robotic arm enables the tooling to have automated operation function, the tooling frame is the core load-bearing foundation, the counterweight balances the overall center of gravity to avoid off-center loading, the side pull assembly, the side movable clamping assembly, the fixed clamping assembly, and the auxiliary clamping assembly form a three-dimensional clamping system, the side pull assembly and the side movable clamping assembly distributed at 90° angles can apply clamping force from different dimensions to ensure the stability of the fork body during the welding process and effectively avoid the risk of welding deformation and displacement.

[0008] Preferably, the side-pull assembly includes a side fixing frame fixedly installed with the tooling frame. A push rod cylinder is fixedly installed at the lower part of the side fixing frame. A movable plate is fixedly installed at the movable end of the push rod cylinder. A movable plate is fixedly installed at the upper part of the movable plate. Two symmetrically distributed guide rails are provided between the movable plate and the tooling frame. An upper fixing frame is fixedly installed at the top of the movable plate. A downward pressing cylinder is fixedly installed at the top of the upper fixing frame. A downward pressing head is fixedly installed at the movable end of the downward pressing cylinder. Guide rods are fixedly installed on both sides of the top of the downward pressing head. A guide sleeve is provided at the connection between the guide rod and the upper fixing frame.

[0009] Through the above technical solution, the push rod cylinder drives the moving plate to move along the guide rail, realizing flexible adjustment of the lateral clamping position to adapt to the clamping requirements of different specifications of fork bodies. The pressing cylinder carried by the upper fixed frame drives the pressing head to move longitudinally, completing the vertical clamping of the fork body. The cooperation between the guide rod and the guide sleeve ensures the accurate movement trajectory of the pressing head and avoids deviation.

[0010] Preferably, there are two identical pressing cylinders, guide rods, guide sleeves, and pressing heads. The two pressing cylinders, guide rods, guide sleeves, and pressing heads are symmetrically distributed about the vertical axis of the upper fixed frame, and the pressing head is in contact with the fork body.

[0011] By utilizing the above technical solution, and employing two sets of symmetrically distributed pressing cylinders, guide rods, guide sleeves, and pressing heads, the clamping force on the top of the fork body is made consistent, significantly improving the stability during the welding process.

[0012] Preferably, the side movable clamping assembly includes a side fixing frame two fixedly installed with the tooling frame, a push rod cylinder two fixedly installed on the outer side of the side fixing frame two, a connector fixedly installed on the movable end of the push rod cylinder two, a connecting plate fixedly installed on the end of the connector away from the push rod cylinder two, a clamping plate fixedly installed on the upper part of the connecting plate, and two symmetrically distributed guide rails two provided between the clamping plate and the tooling frame.

[0013] Through the above technical solution, the push rod cylinder two transmits driving force through the connector and connecting plate, which drives the clamping plate to move smoothly along the guide rail two. The clamping plate is used in conjunction with the fixed clamping assembly to clamp the fork body.

[0014] Preferably, the clamping plate corresponds to the fixed clamping assembly, and both the clamping plate and the fixed clamping assembly are in contact with the fork body.

[0015] Through the above technical solution, the corresponding arrangement of the clamping plate and the fixed clamping component ensures that the fork body is clamped between the two, and the bidirectional contact connection ensures that the workpiece and the clamping surface are tightly attached, avoiding displacement during welding.

[0016] Compared with the prior art, this utility model provides a novel clamping fixture for automatic welding of forklift forks, which has the following advantages: 1. This new type of clamping fixture for automatic welding of forklift forks balances the overall center of gravity and avoids uneven loading by using counterweights. It is equipped with a connecting plate that connects to the robotic arm to achieve automated operation, which greatly improves the efficiency of welding operations. The limit stop can quickly define the placement reference of the forklift body. The side pull assembly, the side movable clamping assembly, the fixed clamping assembly, and the auxiliary clamping assembly form a three-dimensional clamping system. The side pull assembly and the side movable clamping assembly, which are distributed at a 90° angle, can apply clamping force from different dimensions. At the same time, the side pull assembly can flexibly adjust the lateral clamping position through the cooperation of guide rails and cylinders to adapt to the clamping requirements of different specifications of forklift bodies, and has strong versatility. 2. This new type of automatic welding clamping fixture for forklift forks features two symmetrically distributed downward pressing cylinders that drive the downward pressing head, ensuring uniform clamping force on the top of the forklift body. The cooperation of the guide rail, guide rod, and guide sleeve ensures accurate and unbiased movement of the clamping components. The side movable clamping components and the fixed clamping components form a bidirectional contact connection, ensuring a tight fit between the workpiece and the clamping surface. The combination of the three-dimensional clamping system and the continuous and uniform multi-dimensional clamping force effectively prevents workpiece deformation and displacement during welding, significantly improving the welding accuracy of the forklift body and the quality of the finished product. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the tooling frame of this utility model. Figure 1 ; Figure 3 This is a schematic diagram of the three-dimensional structure of the tooling frame of this utility model. Figure 2 ; Figure 4 This is a schematic diagram of the installation structure of the side-pull assembly and the side-movable clamping assembly of this utility model; Figure 5 This is a three-dimensional structural diagram of the side-pull assembly of this utility model; Figure 6 This is a schematic diagram of the fork frame body installation structure of this utility model; Figure 7 This is a schematic diagram of the counterweight installation structure of this utility model.

[0018] The components include: 1. Tooling frame; 2. Mounting base; 3. Counterweight; 4. Limiting stop; 5. Connecting plate; 6. Side pull assembly; 601. Side fixing frame one; 602. Push rod cylinder one; 603. Moving plate; 604. Guide rail one; 605. Upper fixing frame; 606. Downward pressing cylinder; 607. Guide rod; 608. Guide sleeve; 609. Downward pressing head; 7. Side movable clamping assembly; 701. Side fixing frame two; 702. Push rod cylinder two; 703. Connector; 704. Connecting plate; 705. Guide rail two; 706. Clamping plate; 8. Fixed clamping assembly; 9. Auxiliary clamping assembly; 10. Fork body. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1: like Figure 1-7 As shown, this utility model provides a novel clamping fixture for automatic welding of forklift forks, including a fixture frame 1 and a side pull assembly 6 and a side movable clamping assembly 7 located on the upper part of the fixture frame 1. A mounting base 2 is fixedly installed at the end of the fixture frame 1, and a counterweight block 3 is fixedly installed at the end of the mounting base 2 away from the fixture frame 1. A limit stop bar 4 is fixedly installed on the upper side of the fixture frame 1. A connecting plate 5 is fixedly installed in the middle of the bottom end of the fixture frame 1. A fixed clamping assembly 8 corresponding to the side movable clamping assembly 7 is also fixedly installed at the top of the fixture frame 1. An auxiliary clamping assembly 9 is fixedly installed on the side of the side pull assembly 6. The fork carriage body 10 is placed on the fixture frame 1.

[0021] Example 2: like Figure 2-7 As shown, this is an improvement on the previous embodiment.

[0022] Specifically, the side-pulling assembly 6 and the side-moving clamping assembly 7 are distributed at a 90° angle. Several identical limit stops 4 are provided, and these limit stops 4 are evenly distributed at the top of the tooling frame 1. The connecting plate 5 is connected to the robotic arm. The advantages are that the limit stops 4 initially define the placement reference of the fork body 10, the cooperation between the connecting plate 5 and the robotic arm enables the tooling to have automated operation functions, the tooling frame 1 is the core load-bearing foundation, the counterweight 3 balances the overall center of gravity to avoid uneven loading, and the side-pulling assembly 6, the side-moving clamping assembly 7, the fixed clamping assembly 8, and the auxiliary clamping assembly 9 form a three-dimensional clamping system. The side-pulling assembly 6 and the side-moving clamping assembly 7, distributed at a 90° angle, can apply clamping force from different dimensions to ensure the stability of the fork body 10 during welding and effectively avoid the risk of welding deformation and displacement.

[0023] Example 3: like Figure 2-7 As shown, this is an improvement on the previous embodiment.

[0024] Specifically, the side-pull assembly 6 includes a side fixing frame 601 fixedly installed with the tooling frame 1. A push rod cylinder 602 is fixedly installed at the lower part of the side fixing frame 601. A movable plate 603 is fixedly installed at the movable end of the push rod cylinder 602. A movable plate 603 is fixedly installed at the upper part of the movable plate 603. Two symmetrically distributed guide rails 604 are provided between the movable plate 603 and the tooling frame 1. An upper fixing frame 605 is fixedly installed at the top of the movable plate 603. A lower pressing cylinder 606 is fixedly installed at the top of the upper fixing frame 605. A lower pressing head 609 is fixedly installed at the movable end of the lower pressing cylinder 606. Guide rods 607 are fixedly installed on both sides of the top of the lower pressing head 609. A guide sleeve 608 is provided at the connection between the guide rod 607 and the upper fixing frame 605. The advantages are that the push rod cylinder 602 drives the moving plate 603 to move along the guide rail 604, realizing flexible adjustment of the lateral clamping position and adapting to the clamping requirements of different specifications of fork body 10. The pressing cylinder 606 carried by the upper fixed frame 605 drives the pressing head 609 to move longitudinally, completing the vertical pressing of the fork body 10. The cooperation between the guide rod 607 and the guide sleeve 608 ensures the accurate movement trajectory of the pressing head 609 and avoids deflection.

[0025] Specifically, two identical sets of pressing cylinders 606, guide rods 607, guide sleeves 608, and pressing heads 609 are provided. These two sets of pressing cylinders 606, guide rods 607, guide sleeves 608, and pressing heads 609 are symmetrically distributed about the vertical axis of the upper fixed frame 605. The pressing head 609 is in contact with the fork body 10. The advantage is that by utilizing two sets of symmetrically distributed pressing cylinders 606, guide rods 607, guide sleeves 608, and pressing heads 609, the clamping force on the top of the fork body 10 is consistent, significantly improving stability during the welding process.

[0026] Example 4: like Figure 2-7 As shown, this is an improvement on the previous embodiment.

[0027] Specifically, the side-moving clamping assembly 7 includes a side fixing bracket 701 fixedly installed with the tooling frame 1. A push rod cylinder 702 is fixedly installed on the outer side of the side fixing bracket 701. A connector 703 is fixedly installed on the movable end of the push rod cylinder 702. A connecting plate 704 is fixedly installed on the end of the connector 703 away from the push rod cylinder 702. A clamping plate 706 is fixedly installed on the upper part of the connecting plate 704. Two symmetrically distributed guide rails 705 are provided between the clamping plate 706 and the tooling frame 1. The advantage is that the push rod cylinder 702 transmits driving force through the connector 703 and the connecting plate 704, driving the clamping plate 706 to move smoothly along the guide rails 705. The clamping plate 706 is used in conjunction with the fixed clamping assembly 8 to clamp the fork body 10.

[0028] Specifically, the clamping plate 706 corresponds to the fixed clamping assembly 8, and both the clamping plate 706 and the fixed clamping assembly 8 are in contact with the fork body 10. The advantage is that the corresponding arrangement of the clamping plate 706 and the fixed clamping assembly 8 ensures that the fork body 10 is clamped between the two, and the bidirectional contact connection ensures that the workpiece is tightly fitted with the clamping surface, preventing displacement during welding.

[0029] Working principle: In use, the fork body 10 is first placed in the designated position of the tooling frame 1. Several equally spaced limit stops 4 quickly define its placement reference position. Then, the equipment is started. The push rod cylinder 602 in the side pull assembly 6 drives the moving plate 603 to move along the guide rail 604 to the lateral clamping position that matches the specifications of the fork body 10. At the same time, the double set of pressing cylinders 606 on the upper fixed frame 605 synchronously drives the pressing head 609. Under the precise guidance of the guide rod 607 and the guide sleeve 608, the top of the fork body 10 is evenly pressed. The push rod cylinder 702 in the side movable clamping assembly 7 drives the clamping plate 706 to move smoothly along the guide rail 705 through the connector 703 and the connecting plate 704, and then clamps the plate 706 to the fixed position. The fixed clamping component 8 forms a bidirectional contact to achieve lateral clamping, while the auxiliary clamping component 9 simultaneously conforms to the side of the workpiece to form a three-dimensional clamping system. Then, the robotic arm connected to the connecting plate 5 drives the tooling and the stable clamping fork body 10 to move to the preset welding station. The counterweight 3 balances the overall center of gravity to avoid uneven load. During the welding process, the side pull component 6 and the side movable clamping component 7, which are distributed at a 90° angle, apply continuous and uniform clamping force from different dimensions. The double-set symmetrical pressing structure, along with the guide rail and guide structure, jointly ensures the stability of the workpiece posture and effectively prevents welding deformation and displacement. After the welding is completed, each cylinder resets, the clamping components are released, and the robotic arm drives the tooling and the finished fork body 10 to move to the part removal station, completing one automated welding clamping operation cycle.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel clamping fixture for automatic welding of forklift forks, comprising a fixture frame (1) and a side pull assembly (6) and a side movable clamping assembly (7) located on the upper part of the fixture frame (1), characterized in that: The tooling frame (1) is fixedly installed with a mounting base (2) at one end. A counterweight (3) is fixedly installed at the end of the mounting base (2) away from the tooling frame (1). A limit stop (4) is fixedly installed on the upper side of the tooling frame (1). A connecting plate (5) is fixedly installed in the middle of the bottom end of the tooling frame (1). A fixed clamping component (8) corresponding to the side movable clamping component (7) is also fixedly installed at the top of the tooling frame (1). An auxiliary clamping component (9) is fixedly installed on the side of the side pull component (6). A fork body (10) is placed on the tooling frame (1).

2. The novel clamping fixture for automatic welding of forklift forks according to claim 1, characterized in that: The side pull assembly (6) and the side movable clamping assembly (7) are distributed at a 90° angle. Several identical limit stops (4) are provided. Several limit stops (4) are distributed at equal intervals at the top of the tooling frame (1). The connecting plate (5) is connected to the robotic arm.

3. The novel clamping fixture for automatic welding of forklift forks according to claim 1, characterized in that: The side-pull assembly (6) includes a side fixing frame (601) fixedly installed with the tooling frame (1). A push rod cylinder (602) is fixedly installed at the lower part of the side fixing frame (601). A movable plate (603) is fixedly installed at the movable end of the push rod cylinder (602). A movable plate (603) is fixedly installed at the upper part of the movable plate (603). Two symmetrically distributed guide rails (604) are provided between the movable plate (603) and the tooling frame (1). An upper fixing frame (605) is fixedly installed at the top of the movable plate (603). A lower pressing cylinder (606) is fixedly installed at the top of the upper fixing frame (605). A lower pressing head (609) is fixedly installed at the movable end of the lower pressing cylinder (606). Guide rods (607) are fixedly installed on both sides of the top of the lower pressing head (609). A guide sleeve (608) is provided at the connection between the guide rod (607) and the upper fixing frame (605).

4. The novel clamping fixture for automatic welding of forklift forks according to claim 3, characterized in that: The pressing cylinder (606), guide rod (607), guide sleeve (608) and pressing head (609) are all provided in two identical units. The two pressing cylinders (606), guide rods (607), guide sleeves (608) and pressing heads (609) are symmetrically distributed about the vertical axis of the upper fixed frame (605). The pressing head (609) is in contact with the fork body (10).

5. The novel clamping fixture for automatic welding of forklift forks according to claim 1, characterized in that: The side movable clamping assembly (7) includes a side fixing frame two (701) fixedly installed with the tooling frame (1). A push rod cylinder two (702) is fixedly installed on the outer side of the side fixing frame two (701). A connector (703) is fixedly installed on the movable end of the push rod cylinder two (702). A connecting plate (704) is fixedly installed on the end of the connector (703) away from the push rod cylinder two (702). A clamping plate (706) is fixedly installed on the upper part of the connecting plate (704). Two symmetrically distributed guide rails two (705) are provided between the clamping plate (706) and the tooling frame (1).

6. A novel clamping fixture for automatic welding of forklift forks according to claim 5, characterized in that: The clamping plate (706) corresponds to the fixed clamping assembly (8), and both the clamping plate (706) and the fixed clamping assembly (8) are in contact with the fork body (10).

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